Life assurance stocks feature among the weakest performers as global markets continue to drift lower. Aviva, Prudential and Standard Life suffer the biggest falls in the sector.In the mining sector Rio Tinto is still under a cloud after four of its employees were arrested in China. Home Retail Group, owner of the Argos chain, has the wind in its sails after the weekly trading update from John Lewis. The department store group said it sold more electric fans during last week's heatwave than it did in the whole of 2008, which bodes well for sales of fans at Argos. FTSE 100 - RisersTesco (TSCO) 359.10p +2.98%Vedanta Resources (VED) 1,350.00p +2.58%Sage Group (SGE) 175.50p +2.51%Home Retail Group (HOME) 272.25p +2.16%Morrison (Wm) Supermarkets (MRW) 246.75p +2.07%United Utilities Group (UU.) 484.75p +2.00%Associated British Foods (ABF) 778.00p +1.97%Royal Bank of Scotland Group (RBS) 36.14p +1.92%Schroders (SDR) 789.00p +1.87%Standard Chartered (STAN) 1,152.00p +1.86%FTSE 100 - FallersAviva (AV.) 277.75p -4.55%Balfour Beatty (BBY) 284.00p -2.99%Prudential (PRU) 352.25p -2.96%Standard Life (SL.) 173.90p -2.69%Wolseley (WOS) 1,038.00p -2.63%Legal & General Group (LGEN) 49.97p -2.57%Old Mutual (OML) 75.00p -2.51%Rio Tinto (RIO) 1,925.50p -2.11%Lonmin (LMI) 1,011.00p -1.94%3i Group (III) 222.25p -1.88%BG Group (BG.) 980.50p -1.41%